Language / "Poles" or "Polish people" - which is better to use? [200]

When I referred polish people to 'Poles', I was rapidly corrected 'you mean Polish people!' by a Polish woman. I didn't mean anything by this, and hope it doesn't offend anyone here... :-(

Language / Polish Accusative / Genitive case [20]

... hi...

Have to complete this table with the correct case (genitive or accusative) endings

Czy lubisz? On/ona lubi ... On/ona nie lubi ...
herbata herbate herbaty
sok sok soka
chleb chleb chleba
maslo maslo masla
szynka szynke szynke
mieso mieso miesa
makaron makaron makarona

Is there a rule for endings for masculine, feminine, and neuter nouns (there probably is!)

Language / Polish Accusative / Genitive case [20]

So, the Genitive ...

Is there a 'rule' which dictates the ending from the accusative to the genitive.

Czy lubisz mleko? ---- Tak, lubie MLEKO ---- Nie, nie lubie MLEKA
Czy lubisz salata? ---- Tak, lubie SALATĘ ---- Nie, nie lubie SALATY
Czy lubisz maslo? ---- Tak, lubie MASLO ---- Nie, nie ubie MASLA
Czy lubisz chleb? ---- Tak, lubie CHLEB ---- Nie, nie lubie CHLEBA
Czy lubisz szynka? ---- Tak, lubie SZYKĘ ---- Nie, nie lubie SZYNKI
Czy lubisz wino? ---- Tak, lubie WINO ---- Nie, nie lubie WINA
Czy lubisz ryz? ---- Tak, lubie ryz ---- Nie, nie lubie RYZA

Any helpful hints out there? Please?